Investigation of Methyl Decanoate Combustion in an Optical Direct-Injection Diesel Engine

An optically accessible heavy-duty diesel engine was used to investigate the impact of methyl decanoate (MD) on combustion and emissions. Specific goals of the study were to produce experimental data for validating engine combustion models using MD (a biodiesel surrogate), as well as to determine if MD could enable soot-free leaner-lifted flame combustion (LLFC), a mode of mixing-controlled combustion associated with equivalence ratios below approximately 2. An ultralow sulfur diesel certification fuel (CF) was used as the baseline fuel, and experiments were conducted at two fuel-injection pressures with three levels of charge-gas dilution; start of combustion and duration of fuel injection were held constant. In addition to conventional pressure-based and engine-out emissions measurements, exhaust laser-induced incandescence, in-cylinder natural luminosity, and in-cylinder chemiluminescence diagnostics were used to provide detailed insight into combustion processes. Results indicate that MD effectively e...

[1]  Dennis L. Siebers,et al.  Relationship Between Diesel Fuel Spray Vapor Penetration/Dispersion and Local Fuel Mixture Fraction , 2011 .

[2]  G. Marin,et al.  A comprehensive study of methyl decanoate pyrolysis , 2012 .

[3]  M. Yao,et al.  Experimental and Modeling Study of Biodiesel Surrogates Combustion in a CI Engine , 2013 .

[4]  Charles J. Mueller,et al.  Liquid penetration length of heptamethylnonane and trimethylpentane under unsteady in-cylinder conditions , 2010 .

[5]  Christoph Espey,et al.  Chemiluminescence Imaging of Autoignition in a DI Diesel Engine , 1998 .

[6]  P. Witze,et al.  Qualitative Laser-Induced Incandescence Measurements of Particulate Emissions During Transient Operation of a TDI Diesel Engine , 2001 .

[7]  F. Dryer,et al.  A kinetic model for methyl decanoate combustion , 2012 .

[8]  Charles J. Mueller,et al.  An Experimental Investigation of Low-Soot and Soot-Free Combustion Strategies in a Heavy-Duty, Single-Cylinder, Direct-Injection, Optical Diesel Engine , 2011 .

[9]  Thomas D. Durbin,et al.  Emissions and Redox Activity of Biodiesel Blends Obtained from Different Feedstocks from a Heavy-Duty Vehicle Equipped with DPF/SCR Aftertreatment and a Heavy-Duty Vehicle without Control Aftertreatment , 2014 .

[10]  Charles J. Mueller,et al.  An Experimental Investigation of the Origin of Increased NOx Emissions When Fueling a Heavy-Duty Compression-Ignition Engine with Soy Biodiesel , 2009 .

[11]  Ignition Delay of Bio-Ester Fuel Droplets , 2006 .

[12]  Dennis L. Siebers,et al.  Non-Sooting, Low Flame Temperature Mixing-Controlled DI Diesel Combustion , 2003 .

[13]  John E. Dec,et al.  Advanced compression-ignition engines—understanding the in-cylinder processes , 2009 .

[14]  Dennis L. Siebers,et al.  Relationship Between Ignition Processes and the Lift-Off Length of Diesel Fuel Jets , 2005 .

[15]  Tianfeng Lu,et al.  An Experimental and Kinetic Modeling Study of Methyl Decanoate Combustion , 2011 .

[16]  J. Naber,et al.  Effects of Gas Density and Vaporization on Penetration and Dispersion of Diesel Sprays , 1996 .

[17]  Anthony J. Savas,et al.  On the spherically symmetrical combustion of methyl decanoate droplets and comparisons with detailed numerical modeling , 2013 .

[18]  L. Pickett,et al.  Orifice Diameter Effects on Diesel Fuel Jet Flame Structure , 2001 .

[19]  William J. Pitz,et al.  DETAILED CHEMICAL KINETIC MECHANISMS FOR COMBUSTION OF OXYGENATED FUELS , 2000 .

[20]  Dennis L. Siebers,et al.  Soot Formation in Diesel Fuel Jets Near the Lift-Off Length , 2006 .

[21]  Charles J. Mueller,et al.  Liquid-Phase Penetration under Unsteady In-Cylinder Conditions: Soy- and Cuphea-Derived Biodiesel Fuels Versus Conventional Diesel , 2010 .

[22]  Mark P. B. Musculus,et al.  Effects of the In-Cylinder Environment on Diffusion Flame Lift-Off in a DI Diesel Engine , 2003 .

[23]  Tianfeng Lu,et al.  Experimental and kinetic modeling study of extinction and ignition of methyl decanoate in laminar non-premixed flows , 2008 .

[24]  Thomas J. Bruno,et al.  Methodology for Formulating Diesel Surrogate Fuels with Accurate Compositional, Ignition-Quality, and Volatility Characteristics , 2012 .

[25]  Rolf D. Reitz,et al.  Combustion Model for Biodiesel-Fueled Engine Simulations using Realistic Chemistry and Physical Properties , 2011 .

[26]  Julien Manin,et al.  Effects of Oxygenated Fuels on Combustion and Soot Formation/Oxidation Processes , 2014 .

[27]  A. S. Cheng,et al.  An Experimental Study of Diesel-Fuel Property Effects on Mixing-Controlled Combustion in a Heavy-Duty Optical CI Engine , 2014 .

[28]  D. Haworth,et al.  Premixed ignition behavior of alternative diesel fuel-relevant compounds in a motored engine experiment , 2007 .

[29]  Charles J. Mueller,et al.  Investigation of Fuel Effects on Dilute, Mixing-Controlled Combustion in an Optical Direct-Injection Diesel Engine , 2007 .

[30]  A. S. Cheng,et al.  Investigation of the impact of biodiesel fuelling on NO x emissions using an optical direct injection diesel engine , 2006 .

[31]  Anthony J. Marchese,et al.  A wide-ranging kinetic modeling study of methyl butanoate combustion , 2007 .

[32]  C. Westbrook,et al.  Detailed chemical kinetic mechanism for the oxidation of biodiesel fuels blend surrogate , 2009 .

[33]  M. Oehlschlaeger,et al.  Autoignition of Methyl Decanoate, a Biodiesel Surrogate, under High-Pressure Exhaust Gas Recirculation Conditions , 2012 .

[34]  Gerhard Knothe,et al.  “Designer” Biodiesel: Optimizing Fatty Ester Composition to Improve Fuel Properties† , 2008 .

[35]  Dennis L. Siebers,et al.  Flame Lift-Off on Direct-Injection Diesel Fuel Jets: Oxygen Concentration Effects , 2002 .

[36]  James Scott,et al.  A review of multi-criteria decision-making methods for bioenergy systems , 2012 .

[37]  C. Westbrook,et al.  Detailed chemical kinetic oxidation mechanism for a biodiesel surrogate , 2007 .

[38]  J. Abraham,et al.  A comparative study of n-heptane, methyl decanoate, and dimethyl ether combustion characteristics under homogeneous-charge compression–ignition engine conditions , 2009 .

[39]  P. Glaude,et al.  Experimental study of the oxidation of large surrogates for diesel and biodiesel fuels , 2009 .